Apparatus for applying adhesive to two adjacent surfaces simultaneously



1949 J. 5. KAMBORIAN 2,491,185

APPARATUS FOR APPLYING ADHESIVE TO TWO ADJACENT SURFACES SIMUUI'ANEOUSLYv 2 Sheets-Sheet 1 Filed 001:. 2a, 1946 five/2Z0 m 13, 1949 s. KAMBOR AN2.491185- APPARATUS FOR APPLYING A HESIVE TO TWO ADJACENT SURFACESSIIULTANEOUSLY FiladOct. as, 1946 ZSheets-Shaet z P/M PSI Mm PatentedDec. 13, 1949 APPARATUS FOR APPLYING ADHESIVE TO TWO ADJACENT SURFACESSIMULTANE- OUSLY Jacob s. Kamborian, West Newton, Mass;

Application October 28, 1946, Serial No. 706,238

2 Claims. (Cl. 91-12) This invention relates to apparatus for applyingfluid adhesive, and more particularly to apparatus designed to applyadhesive simultaneously to two adjacent surfaces, usually disposed inintersecting planes, in such a way as to leave the surfaces immediatelybordering the junction between them free from adhesive, the presentapplication being a continuation-in-partof the application for LettersPatent Serial No. 540,868, filed Junel7, 1944, by Jacob S. Kamborian,now Patent No. 2,467,384, issued April 19, 1949. While the presentinvention is of broad utility, and the apparatus herein disclosed isuseful for applying adhesive simultaneously to adjacent surfaces ofvarious articles, for instance to parts of cardboard boxes or the like,it is specifically illustrated herein, by way of example, as employed inthe manufacture of shoes, in particular for applying adhesivesimultaneously to the inner surface of a marginal portion or appendageof the shoe upper and to the margin of a sole member assembled with theupper upon a last. For more particular illustration, the shoe is hereinshown as of the force-lasted or California type.

Herein, in referring to the manufacture of shoes and to the applicationof adhesive to the shoe parts, the term shoe upper is employed broadlyand intended to cover the upper, proper, of a shoe of ordinary type,whether such upper comprise one or more plies of material, and also toinclude such an appendage to the upper, whether integral or not, as thewrapper of a California type or force-lasted shoe. Likewise whenreference is made to a sole or sole member, this term is intended in abroad sense and to include such elements as the insole, proper, of ashoe of ordinary type whether welt, McKay, or cement lasted; the middlesole of either an ordinary type or a California type of shoe, and thecushion sole or sock lining of the latter type of shoe. While theseparticular instances of the meaning of upper and sole member have beengiven by way of illustration, it is not intended thereby to limit theinterpretation of the terms upper and sole member to these particularembodiments.

Whenever it is attempted to apply adhesive,to the inner surface of themargin of an upper and to the margin of a sole member assembled with theupper upon a last, the adhesive, whether applied as a spray or by meansof a brush, tends to enter the extreme angle between the upper andsition which they at that time occupy. When, thereafter, it is attemptedto last the shoe, if of ordinary type, or to stress the wrapper of aforce-- lasted shoe preparatory to laying it down on the sole member,the adhesive union of the parts strongly resists stress applied to theupper or wrapper so that it is substantially impossible to draw theupper snugly down to the wood of the last or to provide the neat fit andsharp corner desirable where the wrapper of the force-lasted shoe bendsabout the edge of the middle sole, even though force suflicient to tearthe upper material be applied.

Moreover, the customary modes of applying the adhesive are slow andverywasteful of the adhesive, also adding very considerably to the cost ofmaking shoes.

One object of the present invention is to provide means for applyingcement simultaneously to two adjacent surfaces, for example, twosurfaces located in intersecting planes as for insole member and to flowdown around the periphv stance the upper of an ordinary cement lastedshoe (assembled on a last with an insole) and the exposed surface of theinsole, or as a further exforce lasted shoe and the margin of thecushion or middle sole of such a shoe, and to provide means operative soto apply the adhesive in a more expeditious, less wasteful and lessexpensive way than heretofore. A further object is to provide means forso applying adhesive to adjacent surfaces as to avoid prematurelyattaching adjacent parts to each other. A further object is to providecement-applying means operative to apply cement in distinct, spacedribbons to the two surfaces and adjacent to the line of intersection ofthe respective planes of said surfaces, .but spaced from said line ofintersection. A further object is to provide adhesive-applying apparatus50 designed that the thickness and width of the ribbons of appliedadhesive may be varied at will.

Other and further objects and advantages of the invention will bepointed out in the following more detailed description and by referenceto the accompanying drawings wherein I Fig. 1 is a fragmentaryperspective view showing the present invention embodied in a machinedesigned to apply adhesive simultaneously to the insole and wrapper of aCalifornia-type shoe;

Fig. 2 is a fragmentary side elevation, partly in vertical section,showing the work-advancing element and the adhesive applying nozzle ofthe present invention as they are relatively arranged ample, the innersurface of the wrapper of a preparatory to introducing the work betweenthem;

Fig. 3 is a side elevation of one desirable form of cement-applyinl nmlFig. 4 is a rear view, partly in section, of the nozzle device of Fig. 3

Fig. 5 is a plan view of the nozzle of Fig. 3;

Fig. 6 is a bottom plan view of the nozzle of 3; lg. 7 is a section tolarge scale on the line 1--| of Fig. 4; I

Fig. 8 is a fragmentary rear elevation of an alternative form ofcement-applying nozzle;

Figs. 9 and 10 are perspective views to larger scale than Fig. 8,illustrating interchangeable parts of the nozzle of Fig. 8; and

Fig. 11 is a fragmentary side elevation of a nozzle generally similar tothat of Fig. 8. but provided with a regulating valve; and

Fig. 12 is a section, to larger scale, on the line [2-42 of Fig. 11.

Referring to the drawings the numeral l designates a hollow base orcolumn having a top member 2 which may or may not be integral with thevertical side walls of the base, the base constituting a protective casefor certain operative parts not here illustrated. On the top member 2(Fig. 1) there is mounted the rigid frame IS, the latter being supportedby the top member 2 of the base and being integral with said top memberif so desired. This frame I! projects forwardly beyond the verticalfront face I5 of the base I so as to space the operating mechanismforwardly away from the base and thus avoid interference between thework and the base. The forward part of the frame is provided withbearings for a motor driven vertical shaft 23 which carries aperipherally ribbed or knurled work-advancing or feed roll 25 at itslower end.

The frame I; is provided with horizontal guideways for a slide memberprovided with a downwardly directed bracket arm 28 (Fig. 1)

the tubular stem is but which at other times is so located as to beclosed leak-tight by the inner surface of the wall of the tubular stem29. The upper end of this rotary valve 42 is provided with a collar 45having a lateral arm 46 to which is secured one end of a link 41 (Fig.2) the 01390- site end of which is pivotally connected to an adjustableanchorage member 48 attached to the frame member ii. The parts are soarranged that when the applicator nozzle is operatively related to thework and to the roll 26 by rearward movement of the slide and bracketarm 28, the arm 46 is so positioned by the link 41 that the valve 42 isdisposed to register its port 44 with the opening 3|, thereby permittingadhesive to flow from the pipe 34 through the opening 3! and through thevalve passages 44 and 43 into the applicator nozzle. On the other hand,when the slide I 6 is moved forwardly to the position of Fig. 2, theport 44 in the valve 42 is moved out of registry with the supply openingIt thus preventing delivery of adhesive to the applicator nozzle.

The applicator nozzle 3|, Fig. 3, has a hollow head portion 49 hereshown as integral with the stem 29 and having the internal chamber 50(Fig. 7), the head having the vertical exterior surface 5i, which is thework-engaging surface opposed to the roll 26, and having thesubstantially horizontal, exterior flat, work-engaging bottom surface 52(Fig. 3). The surface 5| is provided with a narrow elongate, verticaldelivery slot or recess 53 (Fig. 4), one marginal wall of which ispreferably notched to provide spaced. fluid distributing ribs 54. Thebottom wall 52 is likewise provided with an elongate recess or slot 55,(Fig. 6) one wall of which is provided with notches to define the fluiddistributin ribs 56. An orifice c-r aperture 51 (Fig, 7) providescommunication between the chamber 50 and the slot or recess 53 and asimilar orifice or aperture 5! provides communication between thechamber 5| having a vertical bore designed to receive the tubular stem29 of an applicator nozzle 30 whose rear (or left hand, as viewed inFig. 2) face 5| is opposed to the roll 28, and so arranged that the workis gripped between said face and the roll when the bracket 28 is in itsrear or operative position.

The tubular stem is provided in its side wall with a supply opening orpassage 3| whose outer end is normally registered with a transverse borein the wall of the bracket 28. This bore is internally screw threadedfor the reception of the threaded end of a hollow fitting to which isconnected the forward end of a flexible, fluid-supply conduit 34 (Fig.1). This fluid supply conduit leads to a pressure regulating valvedevice 35 (Fig. 1) having a regulating handle 36 conveniently locatedfor operation, and also preferably provided with a gauge 31 (Fig. 1) bymeans of which the operator may determine the pressure at which theadhesive is being delivered to the applicator nozzle. By turning thehandle 35 the pressure may be regulated as desired. The fluid adhesiveis supplied to the pressure regulator 35 by means of a pipe leading fromthe dellveryof-a force pump (not shown) located within the base I.

Referring to Fig. 2, the tubular stem 29 of the applicator nozzle housesa rotary valve 42 ha an axial bore 43 opening at its lower end in thelower part of the tubular stem 29 and havin a lateral port 44 at itsupper end which may, at times, be registered with the supply opening iniii) and the slot or recess 55. The orifices 51 and 58 are of smalldiameter, for example of the order of 0.01 inch-the proper diametervarying with the viscosity of cement and the effective pressure head atthe nozzle.

The slots 53 and 55 are of a length respectively corresponding to thewidths of the desired ribbons of adhesive to be deposited on theinnersurface of the upper and on the margin of the sole member and arepreferably quite narrow relatively to their lengths, for example, in theratio of 1-4. It will be noted that the adjacent ends of these slots donot reach to the corner where the faces 5| and 52 of the applicator headintersect, but that these adjacent ends of the slots are spaced asubstantial distance from said corner.

An alternative construction of the nozzle is illustrated in Figs. 8. 9and 10. In this arrangement the head portion 49 of the nozzle isprovided with an imperforate bottom face and a rear, fiat vertical face5i, the chamber being open at the face 5|. For cooperation with thishead 49, there are provided-two or more interchangeable cover plates 59(Figs. 9 and 10) each of these plates being provided with an aperture59' for the reception of a bolt by means of which the cover plate may beclamped firmly against the vertical face 5! of the head 49'. Each ofthese interchangeable plates 59 is furnished with a shallow recess II inthat face which is opposed to the vertical surface 5| of the head 48",the recess il being designed to register with the chamber 50 and beingdefined by a rim 6| having a flat rear face designed, leaktight, toengage the surface 5|. This rim has windows at 62 and at 63 so that whenthe plate is assembled with the head 49, very narrow slots (for instanceof 0.001 inch width) are provided leading outwardly from the recess 60and chamber 50, these slots constituting narrow, elongate deliveryorifices, one being in the rear side of the head, which is opposed tothe roll 26, and the other being at the bottom surface of the head. Byproviding a series of interchangeable plates 59 having windows 62 and 63of different dimensions, it is possible, by interchange of these plates,to provide delivery orifices or slots of different widths and/orlengths.

In the arrangement shown in Figs. 11 and 12, the applicator nozzle 30has a hollow head portion 49 with the interior chamber 5|! and with aremovable cover plate 59* held in place by a bolt 56' in general likethe nozzle of Figs. 8, 9 and 10. However, in the arrangement shown inFigs. 11 and 12, the cement-delivery slot or window 63 is controlled bya manually actuable valve rotatable in a vertical bore 1| in the head 49and having a handle 12 by means of which it may be turned. The valve isso designed that when in one position (Fig. 12) the slot or window 63*is unobstructed but when the valve is turned at right angles whereto thewindow is closed. By turning the valve to intermediate positions, thethickness of the ribbon of cement delivered through the slot or windowmay be varied as desired. Obviously, if the nozzle has a downwardlydirected window or slot, this window or slot 92 of Fig. 10, this windowor slot may be controlled by a valve similar to the valve 10 if desired.

Fig. 1 illustrates a shoe of the force-lasted type substantially as itappears during application of the cement by the apparatus abovedescribed. This shoe comprises the upper U, a sock lining (not shown)and the wrapper W, all united by a seam and assembled upon a last. Themiddle or cushion sole M is assembled with these parts, the wrapperstanding upwardly as shown in Fig. 1, and being substantiallyperpendicular to the bottom surface of the middle sole M. I

In the operation of the machine, the operato after moving the slide withits bracket 28 forwardly, introduces the free marginal portion of thewrapper W (at any desired point in its length) between the roll 26 andnozzle 30, and then allows the slide to move rearwardly, thus grippingthe work between the nozzle and roll. At the same time the valve 42opens. The roll is turning and cement is now forced out through thevertical and horizontal delivery apertures in the applicator nozzle,these apertures extending, the one transversely of the width of thewrapper and the other substantially perpendicular to the edge of themiddle sole, but parallel to the latter. The rotation of the roll 26tends to advance the work, that is to say, move the shoe as a wholerelatively to the nozzle. The result is that the cement which emergesfrom the applicator nozzle apertures is deposited as ribbons R and Rupon the inner surface of the wrapper and upon the margin of the middlesole, respectively. Since, as above described, the nozzle apertures arespaced from the intersection of the vertical and horizontal faces of thenozzle, the ribbons of cement do not coalesce but are spaced apart,leaving an area C at the intersection of the planes of the wrapper andmiddle sole uncoated with cement. Thus, when thereafter the wrapper istensioned upwardly (the cement having in the meantime set and dried)preparatory to laying it down upon the middle sole, there is no driedand set adhesive within the crevice between the wrapper and the outeredge of the middle sole such as would interfere with such upwardtensioning of the wrapper. When pressure on the treadle is released, thenozzle moves forwardly to free the work and at the same time valve 42 isclosed, thus avoiding waste of adhesive.

I claim:

1. In an apparatus for use in applying cement to the inner surface ofthe wrapper and to the margin of the middle sole of a force-lasted shoe,a nozzle having angularly related faces operative concomitantly tocontact the inner surface of the wrapper and the margin of the middlesole, at least one of said faces having an elongate slot therein of alength substantially equal to the width of the desired ribbon ofadhesive to be deposited, and means for varying the effective width ofsaid slot thereby to determine the thickness of the ribbon of adhesivedelivered.

2. In an apparatus for use in applying cement to the inner surface ofthe wrapper and to the margin of the middle sole of a force-lasted shoe,a nozzle having angularly related faces operative concomitantly tocontact the inner surface of the wrapper and the margin of the middlesole, one at least of said faces having an elongate slot therein of alength substantially equal to the width of the desired ribbon ofadhesive to be deposited and of a width substantially equaling themaximum thickness of the ribbon of adhesive and a rotary manuallyadjustable valve operative to vary the effective width of the slot,thereby to vary the thickness of the ribbon of adhesive deliveredthrough the slot.

JACOB S. KAMBORIAN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,097,572 Newhall Nov. 2, 19372,097,573 Newhall Nov. 2, 1937 2,100,342 MacKenzie Nov. 30, 19372,197,109 MacKenzie Apr. 16, 1940 2,225,065 MacKenzie Dec. 17, 19402,225,066 MacKenzie Dec. 17, 1940

